Toggle-bolt.



TOGGLE BOLT..

APPLICATION FILED MAR. 1. 19l5.

. kinds to walls, ceilings PAUL H. MCCAIN, OF CHICAGO, ILLINOIS,ASSIGNOR- COMPANY, OF CHICAGO, ILLINOIS, A

TO PHEOLL MANUFACTURING CORPORATION.

TOGGLE-BOLT.

Application led March l, 1915.

To oZZ whom t may concern Be it known that I, PAUL H. MCCAIN, a citizenof the United States, and a resident ot Chicago, in the county of Cookand State of Illinois, have invented certain new and useful Improvementsin Toggle-Bolts, of which I declare the following to be a full, clear,and exact description, reference being had to the accompanying drawing,forming a part of this specification.

The invention consists in the features of novelty hereinafter described,illustrated in the accompanying drawing and particularly pointed out inthe claims at the end of this specification.

In the drawing', Figure l is a View 1n vertical section through a wall,my improved toggle bolt being shown in the act of being thrust throughthe hole in the wall. Fig. 2 is a view similar to Fig. l and showing thetoggle bolt in anchored position. Fig. 3 is a perspective view of myimproved toggle bolt with the anchor head folded against the bolt, partof the threaded bolt being broken away. Fig. 4 is a view similar to Fig.3 with the anchor head in readiness for use. Fig. 5 is a detailperspective view of my improved anchor head.

My invention has relation to toggle bolts or anchor bolts of the typemore particularly designed for securing` xtures of different and thelike. v

Referring to the accompanying drawing, A designates a section of a wallthrough which is formed a hole a for the passage of the toggle bolt, andin Fig. 2 there is shown a part B4 that is to be attached to the wall bythe bolt.

C designates a threaded bolt in connection with which my improved anchorhead may be used.` This bolt C may be provided with an ordinary beveledhead c, with a transverse slot to receive the end of a screwdriver, andupon the threaded portion of the bolt C is mounted a correspondinglythreaded nut c.

My improved anchor head is preferably formed from sheet metal stamped tothe required shape and comprises side walls (Z and (Z that are connectedtogether at one end by a raised crown Z2 that preferably extends aboutmidway of the anchor head and terminates in a square shouldered portioncl3. A diacent their opposite ends` the side walls CZ and CZ areconnected together by a bridge Speccaton of Letters Patent.

'threaded bolt C, they .Patented Jan. il, i916. Serial No. 11,277.

Z4 that is preferably formed with a longitudinal portion (Z5. Thecentral portions of the side walls CZ and CZ are of a height materiallyless than the crown (Z2, so that the bolt C may be turned toapproximately parallel relation to the anchor head when the anchor headis to be thrust through the hole in the wall or ceiling.

Between the crown (Z2 and the bridge (Z4 of the anchor head is formed anopen space d through which the threaded bolt C will be passed and asshown, this space (ZG is shorter than the diagonal dimension of the nutc', so that when the bolt is in position for use, as shown in Figs. 2and 4, the edge of the nut will be engaged and prevented from turning bythe squared shoulder Z3 at the inner end of the crown cZZ.

Each of the side walls Z and CZ is shown as provided with a projectingarm Z7 that extends longitudinally from the end of the side wall, as atZS and upwardly at right angles to the anchor head, as at (Z9. Thesearms Z7 are arranged out of line with the bolt C when the anchor head isin the folded or collapsed position shown in Figs. 1 and 3 of thedrawings, so that the arm Z7 will not prevent the turning of the bolt Cto such position. Preferably, two projecting arms (Z7 are employed,although obviously one arm only may be used without departing from thespirit of the invention.

Between the end of the bridge (ZA1 and the upstanding portions (Z9 ofthe arms Z7 is formed a depressed seat or space cZ10 to receive aportion of the nut c when the bolt C is turned to the position shown inFigs. 1 and 3 of the drawings. By forming the arms (Z7 outwardly fromthe lower edges of the side walls Z and (Z, the anchor head is affordeda longer bearing against the inner surface of the wall with which itwill engage.

VVhen the toggle holt is to be used. the anchor head will he foldedagainst the bolt C, as shown in Figs. 1 and 8, and as the projectingarms ZT extend out of line of the will not interfere with the turning ofthe bolt to the collapsed position shown, and the space or seat Zwadjacent the projecting arm Z7 will receive the nut c when the bolt C isturned to bear against the bridge cZt. A marked advantage incident tothe location of the arm or arms (Z7 at one side of the position occupiedi by the bolt C when in folded position, is that these arms will engagewith the-nutro regardless of the position of the nut upon the bolt C.Vhere the anchor head is provided with a projecting arm arrangedcentrally at the end of the anchor head, as in prior constructions, itis necessary, in order to permit the anchor head to be folded snuglyagainst the bolt C, to move the nut c to approximately the end of thebolt C, and when the nut is thus moved to the end of the bolt, there isdanger of the nut, and consequently the anchor head, becoming disengagedfrom the bolt C after the anchor head has been thrust through the holein the wall. By arranging the projecting arm that engages the nut at oneside of the line of the bolt C, no care is required upon the part of theworkman to adjust the nut to a position at the end of the bolt.

After the toggle bolt has been passed through the hole in the wall, thebolt will be withdrawn so as to cause the anchor head to assume theposition shown in Figs. 2 and Il of the drawings, and inasmuch as thebolt space (ZG is shorter than the diagonal dimension of the nut c, theturning of the nut will be resisted by the shoulder Z3 at the inner endof the crown cl2.

While I have shown my improved anchor head as applied to a screw bolthaving a beveled head 0 and provided at its opposite end with a squarednut c', it is obvious that if desired, an ordinary square head bolt maybe used, in which case such square bolt head would be engaged by theanchor head and the retaining nut would be screwed upon the outer orfree end of the bolt, in manner well understood by those familiar withthis class of devices.

The precise details of construction above described may be variedwithout departure from the spirit of the invention. the novel featuresof which are hereinafter claimed.

Having thus descril ed mv invention, what I claim as new and desire tosecure by Let ters Patent is l. An anchor head for toggle bolts formedCopies of this patent may be obtained for of side walls having a raisedor connecting crown "at one end and a depressed bridge adjacent itsopposite end, an open space being formed between said crown and bridgefor the passage of the bolt, and an outwardly projecting arm at the endof said bridge, such arm being arranged at one side of the axial line ofthe anchor head.

'2. The combination with a bolt and nut of an anchor head formed of sidewalls having a raised connecting crown at one end and a depressed bridgeadjacent its opposite end, an open space being formed between said crownand bridge for the passage of the bolt, said open space being shorterthan the diagcnal width of said nut and the adjacent end of the crownbeing formed with a shoulder to engage said nut when the bolt is inoperative position.

3. An anchor head for toggle bolts formed of side walls having a raisedconnecting crown at one end and a depressed bridge adjacent its oppositeend, an open space being formed between said crown and bridge for thepassage of the bolt, and outwardly projecting arms at a slight distancefrom the end of said bridge to receive the bolt between them, adepressed seat being formed between the end of the bridge and the saidoutwardly projecting arms to admit the edge of the bolt nut.

4:. An anchor head for toggle bolts formed of side walls having a raisedconnecting crown at one end and a bridge adjacent its opposite end,-anopen space being formed between said crown and bridge for the passage ofthe bolt, said side walls being provided with projecting arms extendingfrom their lower edges outwardly a slight distance and having upturnedends extending at approximately right angles to the anchor head at aslight distance from the outer end of the bridge.

PAUL H. MGCAIN.

Witnesses:

GEO. P. FISHER, J. G. ANDERSON.

ve cents each, by addressing the Commissioner of Patents,

Washington, D. C.

